Mene ne yanke-kashe mita na subwoofer da kuma yadda ya kamata a daidaita

Kanfigareshan zamani sauti aga na'ura, samar kewaya sauti shawara aikin rabuwa tashoshi. Irin wannan audio tsarin hada gaba da raya jawabai, a cibiyar tashar da subwoofer.

A karshen hidima don ƙirƙirar ƙarin rinjayen sauti a ƙananan mita kewayon daga 20 zuwa 180 Herz. M wannan zabin ake amfani da lokacin kallon video da shirye-shirye da kuma fina-finai wadda dauke da al'amuran da fashewar abubuwa, gabatar da na sarari roka da kuma irin wannan yanayi a cikin abin da za ka so ya zura kwallo a dauke isa ya girgiza iska.

Yawanci, subwoofers tsara don aiki manufa, cewa shi ne, suna da nasu gina-in amfilifa, da samar da lantarki da kuma gyara. Controls da saituna hada biyu main rike "matakin» (Level) da kuma "cutoff mita» (crossover Frequency). Aiki matakin rike ne m, wannan tsari tsanani sauti. Kuma wannan shi ya sa na biyu sanyi ne, bayyananne ba duk.

Ba kamar da broadband jawabai, subwoofer da aka iyakance da babba baki na mita iyaka. Bi da bi, basses kasu kashi zurfin - 40 Hz, matsakaici - har zuwa 80 Hz, da kuma babban - har zuwa 160 Hz. Wadda cutoff mita aka kafa, da zurfin kai da Ft Irfan sakamako dogara. A wasu lokuta, hallara a babban kewayon da bass Halicci softer sauti, misali, a lokacin da sauraron kiɗa ko kallon fina-finai ba tare da musamman effects an kara da cewa. Idan, duk da haka, na bukatar wani karin stringent sakamako a kan m tsarin na viewer, misali, a cikin nau'i na niƙẽwa gine-gine da kuma yawo taurari, da subwoofer yanke-kashe mita za a iya canja kusa infradiapazonu.

A zahiri, da na sama da mita iyaka - sauki aiki. Hakika kimiyyar lissafi shi ne da aka sani cewa da damar da tace suna da wata dukiya game da low mitoci, kuma inductance - to high. Kamar wancan ne, mai sau LC-tace iya yadda ya kamata ware da ake so yanki iyaka, yayin da rage matakin na undesired siginar bakan. Don "ci gaba da fitar da" high da kuma matsakaici mita shigar da subwoofer, shi ya ishe don taimaka layi daya da shigar da tashoshi na karamin capacitor - 'yan PF. Amma irin wannan m tace za ta rage ma santsi mita mayar da martani, don haka a yi da zane mafi rikitarwa.

Bugu da ƙari, cutoff mita aka bayar da tacewa daga cikin fitarwa sigina zuwa wani iko da lasifika. Don yin wannan a cikin jiki a kusa da magana ne wani jirgi tare da capacitors da inductors.

A cutoff mita na LPF (low izinin tace) fi dacewa ya kamata a gyara, ko da yake a low-cost tsarin irin aikin bazai.

Daidai subwoofer saitin dangane da sauran Ft Irfan aka gyara na wani gida gidan wasan kwaikwayo tsarin - shi na bukatar ha uri da kuma fayyace. A da kyau tsari yana dauke, a cikin abin da bass jefarwa daga gaban da kuma kewaya jawabai suna supplemented da infra-low mitoci broadcasted zuwa gare su, kuma ba "jayayya" da juna, wanda shi ne karfi. Ka'idar "da karfi da mafi alhẽri" bai yi aiki ba a nan.

Saboda haka, cutoff mita ne wani muhimmin saitin cewa tsiraru da tabbatar da daidai da m yi, na] aukacin tsarin.